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                  <p><small><a
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similar
proprietary software</small><small>.<br>
- Create 7Z, ARC, Brotli, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM,
XZ, ZIP, Zstandard
files<br>
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RAR, UDF, ZIPX files and more,</small><small> over 200 archive types
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            <td colspan="1" rowspan="1" style="vertical-align: top;"> <br>
            <h1 style="text-align: center;"><big><big><big><a
 name="what_is_gz_format"></a>What are GZ files, Gzip compressed format<br>
            </big></big></big></h1>
            <br>
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                  <ul>
                    <li>
                      <p><a href="#.gz_extension">WHAT ARE GZ FILES,
GZIP DEFLATE COMPRESSION ALGORITHM<br>
                      </a></p>
                    </li>
                  </ul>
                  </td>
                  <td style="vertical-align: top; width: 128px;">
                  <h2><img title="Gzip Deflate compression algorithm"
 alt="GZ extension" src="file-format/archive-format.png"
 style="width: 96px; height: 96px;" align="right"></h2>
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 style="background-color: rgb(255, 255, 255); vertical-align: top;">
            <div style="text-align: left; color: rgb(0, 0, 0);">
            <h2><big><big><big><a name=".gz_extension"></a><a
 href="#what_is_gz">What are GZ files, Gzip Deflate compression
algorithm</a></big></big><br>
            </big></h2>
            </div>
            <br>
            <div style="text-align: left;"> </div>
            <div style="text-align: left;"> </div>
            <a name="gz_file"></a>GZ extension designates
a <span style="background-color: rgb(255, 238, 221);">single <a
 href="what-is-zip-file.html">file
compression</a> format</span>, created
for GZip (GNU Zip or "gratis
Zip") project, started in 1992 by Jean-Loup Gailly and Mark Adler in
order to provide a free replacement for proprietary / commercial data
compression solutions.<br>
Compression is based on <span style="font-weight: bold;">DEFLATE </span>algorithm
(also used as default algorithm in PKZip/WinZip's
.ZIP format),
a combination of
Lempel-Ziv coding (LZ77) and Huffman coding.<br>
Deflate is obiquitously employed as fast (and light in resources)
compression algorithm (as in zlib / PNG lossless compression and Zopfli
project), and recently is being surpassed in speed by new actively
developed projects as Google's Brotli and Facebook's Zstandard
providing either superior compression ratio at high compression levels,
and faster, near real time compression and extraction speed at whith
lower settings, while retaining a comparable compression ratio to
Deflate.<br>
            <br>
7-Zip (and PeaZip, which handles zip and gzip files through Open Source
7-Zip / p7Zip binary backend) use an custom optimized DEFLATE
implementation producing better compression ratios than standard
reference DEFLATE implementation, keeping full compatibility with other
compression utilities working on .gzip files, but using more processor
time (gzip compression and extraction is however very fast, and
CPU/RAM-light, for today's machines capabilities).<br>
            <br>
PeaZip has full support for GZip standard, including <span
 style="font-weight: bold;">compression</span>, <span
 style="font-weight: bold;">listing</span>, <span
 style="font-weight: bold;">testing</span>, and <span
 style="font-weight: bold;">extraction</span>. Read also: <a
 href="gzip-utility.html">how to create and open GZ files</a><br>
            <h2><img title="Add to GZ compressed file"
 alt="what is a gz file" src="add-to-archive.png"
 style="width: 100px; height: 45px;"></h2>
            <h3><img title="Decompress" alt="what are gzip files"
 src="extract-archive.png" style="width: 112px; height: 45px;"></h3>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="24" cellspacing="0">
              <tbody>
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                  <td
 style="vertical-align: top; text-align: right; width: 128px;">
                  <h2><span style="font-weight: bold;"><img
 title="GZ format features" alt="gzip vs brotli"
 src="file-format/quotes.png" style="width: 32px; height: 32px;"></span></h2>
                  </td>
                  <td style="vertical-align: top; font-style: italic;"><big><a
 name="gzip_vs_brotli_vs_zstandard"></a>When
it is recommended to use GZ format: GZip is usually employed
for compressing TAR packages (meant for distribution or backup) on
Linux and
other Unix-like systems.<br>
GZip Deflate excels in fast compression but recent faster alternatives
as Brotli and Zstandard are now available and increasily supported.<br>
                  </big></td>
                  <td style="vertical-align: bottom; width: 128px;">
                  <h2><img title="How to use GZ format"
 alt="gzip vs zstandard" src="file-format/quotes-inverse.png"
 style="width: 32px; height: 32px;"></h2>
                  </td>
                </tr>
              </tbody>
            </table>
Gzip's GZ file format lacks file archiving feature - <span
 style="background-color: rgb(255, 238, 221);">it can compress
each
single file, but cannot consolidate multiple input file in a single
(compressed) container archive</span> - for that reason it is commonly
used on
Unix/Linux world to <a href="tar-windows.html">compress TAR archives</a>
(as well as Brotli .BR, BZip2 .BZ2, LZMA .XZ, Zstandard .ZST...)
-
archiving format which can consolidate multiple files in a single
package and preserve filesystem information (file attributes, date/time
etc), but lacks compression capabilities - producing TGZ file
(if single file extension
convention is used), alternatively identified by <a
 href="tar-file-format.html">TAR.GZ extension</a> if <a
 href="files-with-double-extension.html"><span
 style="font-weight: bold;">multiple
file extension</span></a> convention is used.<br>
            <br>
            <a name="gz_file_format_specifications"></a>Read more about
.gz extension: <a target="_blank"
 href="https://en.wikipedia.org/wiki/Gzip">GZip<img alt="Gzip wiki"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>
compression program
and GZ file type page on Wikipedia, and on <a target="_blank"
 href="http://www.gzip.org/">GnuZip<img
 title="GnuZip's GZip official domain" alt="Gzip compression program"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> domain.<br>
            <br>
            <table
 style="background-color: rgb(72, 136, 248); width: 100%; text-align: left;"
 border="0" cellpadding="0" cellspacing="1">
              <tbody>
                <tr style="color: rgb(245, 245, 245);">
                  <td colspan="1" rowspan="1"
 style="vertical-align: top; background-color: rgb(72, 136, 248);">
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 border="0" cellpadding="0" cellspacing="0">
                    <tbody>
                      <tr>
                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <table style="width: 100%; text-align: left;"
 border="0" cellpadding="0" cellspacing="0">
                          <tbody>
                            <tr>
                              <td
 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">
                              <h3><big><big><big><big><big><a
 name="gz_format_specs"></a>.GZ</big></big></big></big></big></h3>
                              </td>
                              <td
 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">Authors:
Jean-Loup Gailly, Mark Adler, 1992<br>
limited to 1 single file as input<br>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>SPEED <img
 alt="gzip vs brotli vs zstandard" title="GZip compression speed"
 src="zip-files/star4p5.png" style="width: 80px; height: 16px;"></big></h4>
GZ format features very high speed, due fast and lightweight
compression algorithm, not
encumbered by extra features, so it is ideal to quickly compress large
packages or backup.<br>
Modern alternatives as Brotli and Zstandard recently appeared,
providing better than Deflate compression / decompression speed at
comparable compression ratio.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>COMPRESSION
RATIO <img alt="gzip deflate algorithm"
 title="GZip compression performances" src="zip-files/star2.png"
 style="width: 80px; height: 16px;"></big></h4>
GZ compressed files features low compression ratio. GNUZip employs a
classic Deflate file compressor, comparable to ZIP and PEA, but
inferior to BZip2 or modern compressors as 7Z and RAR format.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;"><big>ADVANCED
OPTIONS <img alt="GZ format features" title="GZip format options"
 src="zip-files/star1.png" style="width: 80px; height: 16px;"></big><br>
GZip standard is meant only to provide single file compression, other
features including archival are out of its scope.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
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                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
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 href="brotli-compressed-file-format.html">BROTLI BR COMPRESSED FILES</a><br>
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                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
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                  </small></td>
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                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
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                  <td
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              <tbody>
                <tr>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="zip-file-format.html">WHAT ARE ZIP ARCHIVES</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="what-is-zip-file.html">WHAT IS FILE COMPRESSION</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="files-with-double-extension.html">DOUBLE FILE EXTENSION</a><a
 href="tar-windows.html"><br>
                  </a></small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="what-is-solid-compression.html">SOLID COMPRESSION ADVANTAGES</a>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="zst-compressed-file-format.html">ZST FORMAT</a><a
 href="self-extracting-archives.html"><br>
                  </a></small></td>
                </tr>
              </tbody>
            </table>
            <p> </p>
            <p><a href="peazip-help-faq.html">FAQ</a>
&gt; Archive file types &gt; What are GZ files and GZip Deflate
compression<br>
            </p>
Topics and search suggestions about what is gz file format
extension, what is
Deflate Gzip
compression algorithm (GnuZip), what are GZ compressed files features
and
specifications, characteristics, advantages and disadvantages compared
to other pure file compression formats like Brotli, BZ2, XZ, and
Zstandard:<br>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="6" cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;">gzip vs
brotli, <br>
what is gz file format, <br>
brotli compared to gzip,<br>
GZ format features,<br>
what are gz files<br>
characteristics of gzip algorithm,<br>
deflate compression algorithm,<br>
is brotli faster than gzip<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> GZip
files
specifications, <br>
gzip vs zstandard,<br>
features of GZ format,<br>
fastest compression algorithm,<br>
zstandard compared to gzip,<br>
characteristics of gz format,<br>
GnuZip deflate algorithm,<br>
what is a gz file,<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;">gzip
compressed files, <br>
what
are gzip files,<br>
advantages of .gz archives,<br>
gz vs brotli vs zstandard,<br>
gzip compression features,<br>
deflate compared with brotli,<br>
pure file compression format,<br>
deflate vs brotli,<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;">what is
gzip compression,<br>
what is gz file type,<br>
how to use gz format,<br>
deflate compared with zstandard,<br>
deflate vs zstandard,<br>
tar.gz file format,<br>
gz compared to br and zst,<br>
GZ format features<br>
                  </td>
                </tr>
              </tbody>
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 style="background-color: rgb(255, 255, 255); margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
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            <td style="vertical-align: top;">Tag Cloud <br>
            <span class="wrd free-rar1" id="download-gz-file-archiver">
            <a href="gzip-files.html">free GZ file archiver</a></span> <span
 class="wrd free-rar4" id="gz-extension"> <a href="gzip-files.html">GZ</a></span>
            <span class="wrd free-rar1" id="what-is-gnu-zip"> <a
 href="gzip-files.html">GZip compression</a></span> <span
 class="wrd free-rar3" id="gz-files"> <a href="gzip-files.html">TAR.GZ
files</a></span> <span class="wrd free-rar2" id="tgz-files"> <a
 href="gzip-files.html">TGZ archives</a></span> <span
 class="wrd free-rar2" id="what-is-gz-format"> <a
 href="gzip-files.html">what
is GZ file format</a></span> <span class="wrd free-rar1"
 id="bz2-file-format"> <a href="bzip2-file.html">BZ2 file format</a></span>
            <span class="wrd free-rar1" id="bzip2-files-compressor"> <a
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            <a href="peazip-compression-benchmark.html">file
compression benchmark</a></span> <span class="wrd free-rar1"
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            <span class="wrd free-rar0" id="what-is-compressed-file"> <a
 href="what-is-zip-file.html">what is a compressed file</a></span> <span
 class="wrd free-rar3" id="optimize-file-compression"> <a
 href="file-compression-performances.html">optimize file
compression</a></span> <span class="wrd free-rar0"
 id="compress-to-separate-files"> <a
 href="how-to-zip-files-separate-archives.html">compress
to separate files</a></span> <br>
            <span class="wrd free-rar1" id="create-new-gz-tar-zip-files">
            <a href="how-to-compress-files-folders.html">how to
compress files</a></span> <span class="wrd free-rar2"
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 class="wrd free-rar3" id="free-file-archiver-application"> <a
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 href="7z-file-format.html">.XZ</a></span><br>
            <span class="wrd free-rar1" id="brotli-compression-utility">
            <a href="brotli-compression-utility.html">Brotli
compression app</a></span> <span class="wrd free-rar0"
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file</a></span> <span class="wrd free-rar1"
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            <span class="wrd free-rar3" id="download-free-rar-software">
            <a href="index.html">download free RAR software</a></span> <br>
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            <a href="file-split.html">how to
split files</a></span> <span class="wrd free-rar2"
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7Z files</a></span> <span class="wrd free-rar3"
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RAR files utility</a></span> <span class="wrd free-rar2"
 id="free-zip-files-extraction-utility"> <a
 href="zip-files-utility.html">open ZIP files</a></span> <span
 class="wrd free-rar0" id="portable-rar-files-software"> <a
 href="peazip-portable.html">portable RAR ZIP software</a></span> <span
 class="wrd free-rar3" id="rar-file-extension"> <a
 href="what-is-rar-file.html">RAR file format</a></span> <span
 class="wrd free-rar0" id="open-source-encryption-software"> <a
 href="encrypt-files.html">how
to encrypt files</a></span><br>
            <span class="wrd free-rar3" id="windows-tar-files-extractor">
            <a href="tar-windows.html">TAR file
extraction</a></span> <span class="wrd free-rar2"
 id="what-is-zip-file-type"> <a href="zip-file-format.html">what is
ZIP format</a></span> <span class="wrd free-rar1"
 id="free-rar-tar-zip-software"> <a href="index.html">free RAR TAR ZIP
software</a></span> <span class="wrd free-rar0"
 id="zstandard-compression-utility"> <a
 href="zstandard-compression-utility.html">Zstandard compression tool</a></span>
            <span class="wrd free-rar1" id="secure-delete-software"> <a
 href="secure-delete.html">secure
file deletion tool</a></span> <span class="wrd free-rar0"
 id="fastest-file-archiving-format"> <a
 href="archive-file-formats-comparison.html">fastest archiving format</a></span>
            <br>
            <span class="wrd free-rar1" id="add-files-to-rar-archives">
            <a href="free-rar-create.html">add files to rar archive</a></span>
            <span class="wrd free-rar3"
 id="maximum-input-size-for-zip-files"> <a
 href="rar-zip-file-format-size-limitations.html">max input file size
for 7Z RAR TAR ZIP archives</a></span> <span class="wrd free-rar2"
 id="free-backup-software"> <a href="backup-files.html">free backup
software</a></span><span class="wrd free-rar0" id="free-zip-application">
            <a href="peazip-64bit.html">free zip application</a></span><br>
            </td>
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            <td style="vertical-align: top; width: 25%;"><small> <img
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